Combined pressure and vacuum valve



(No Model.) v

H. GOBHRING. COMBINED PRESSURE AND VAGUUM VALVE.

No. v587,0 94. n

Patented July 2'7 lll.

wlTNEssEs Y E N R O T T nn HENRY GOEHRING, OF PHILADELPHIA,

PATENT OFFICE.

PENNSYLVANIA.

COMBINED PRESSURE AND VACUUiVl VALVE.

SPECIFICATION forminglpart of Letters Patent No. 587,094, dated July 27,1897.

Application filed March ll, 1897.

To all whom it may concern:

" Beit known that I, HENRY GOEHRING, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Improvement in a Combined Pressure andVacuv um Valve, which improvement is fully set or body B, the lowerportion of which is provided with screw-threads O, and the flange D,adapted to enter and engage, respectively, a cask, barrel, &c., B.

The upper portion of the body B is provided with internal screw threadsE, which are adapted to be engaged by the threaded portion of a cap F,which latter is provided with a series of ports G. The lower wall oredge H of the cap F serves as an abutment or stop for the top surface Mof the pressure-valve K, located thereunder, said valve having anannular body portion which yis adapted .to rest on the valve-seat J,said body portion being bridged by the web K and having dependingtherefrom the wings or guides L,

which may be three or more in number, according to requirements.

vN designates an opening through the web K', through which the stem P ofthe vacuumvalve Q passes, said valve seating upwardly in the presentinstance in opposite directions to the pressure-valve and being adaptedto contact with a suitable valve-seat R, located in said pressure-valve.

S designates a nut or projection mounted upon the vacuum-valve stem Pand adapted to have one end of a spring T bearing ythereupon, the otherend of said spring abutting against the web K', whereby the normaltendency of said spring T is to always hold the vacuum-valve Q againstits seat R.

serial No. 627,031. (No model.)

The operation is as follows: The valve is secured in a cask in themanner indicated in Fig. 1, and when for any reason the pressure withinthe cask or body B of the valve increases to a dangerous degree thevalve K will be raised by reason of the pressure upon the under side ofthe valve-Q, and said pressure will be allowed to escape through theports G, the edge H of the cap F serving to retain the valve K inposition and prevent it from displacement under all conditions and toalso assist in limiting the upward movement thereof. Said'valve, afterthe pressure has beenV reduced, returns to its former position and isagain seated. When for any reason there is a vacuum occasioned withinthe cask, as soon as the pressure of the atmosphere upon the valve Qbecomessuficiently great to overcome the tension of the spring T thevalve Q will be unseated or moved downwardly, and air will pass into thecask until the pressure within and without the latter or its valve is insubstantial equilibrium.

It will be observed that by the employment of the web K' and the stem Pwith the nut or projection thereon and the spring interposed betweensaid nut and web I am enabled to economize space and to simplify theinvention, thereby greatly reducing the cost of production.

Having Vthus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a combined pressure and vacu um valve, a body having a seat therein,a pressure-valve supported on said seat, a cap supported on said body,said cap serving as a closure therefor and adapted to limit the movementand prevent displacement of said pressure-valve, a web extending acrossthe latter and having an opening therein, a vacuum-valve adapted to seatupon said pressure-valve in an opposite direction to the movement of thelatter, a stem attached to said vacuum-valve and passing through saidopening, a nut or projection on said stem and a spring interposedbetween said projection and web and adapted to hold said vacuum-valvenormally upon its seat.

HENRY GOEHRING.

IOO

